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How I discovered a hidden microphone on a Chinese NanoKVM


in reply to doopinglouie

and runs a heavily stripped-down version of Linux that lacks systemd and apt.


Ok, that's a plus in my book. Probably Alpine (often used in containers) or something.

Edit: cut the first question into another one, since this one here likely derails into a System discussion.

Questa voce è stata modificata (1 settimana fa)
in reply to MonkderVierte

On a side note, why do you dislike systemd and apt? I just stumbled into Linux and didn't much consider such questions yet
in reply to nomidor

Scope creep and not-invented-here syndrome; replaces a lot of unix/gnu tooling/specifications with poorer ones, while shitting on some that made nix great. Which is why your distro is either Systemd or not, and not-Systemd distros still need wrappers and shims, because Systemd *also enforces some things in apps.

Then there was only hackjob SysV scripts or Systemd, so it's understandable that most big distros switched to it but now there's s6, runit, Dinit and you need to create a extra distro for them for above reasons. I'm using Artix btw.

Questa voce è stata modificata (1 settimana fa)
in reply to nomidor

Can't speak to him, but I have used unix-like software since the 1990s.

The entire UNIX philosophy boils down to one simple fact. Everything is a file.

This makes maintenance a breeze as no special tools are needed.

You don't need to install anything to read log files.

You can pull a hard drive from a dead system, and just read all the logs.

Most of systemd is just a solution in search of a problem.

in reply to doopinglouie

Apalrd has done some great "popular computer science" videos on the various remote KVM devices that is well worth looking up. One of them specifically goes into the ridiculously sketchy methods that are used to fetch and execute unsigned code in random buckets to handle firmware updates.

But as for the mic? Honestly, if you open up a LOT of consumer devices you are going to find random microphones. Not because they are all secretly spying on you. But because they use "off the shelf" chips and boards that already have those embedded. Especially since microphones and speakers are kind of the same hardware in most cases and we ALL love a good beep.

I 100% agree the software stack shouldn't be on there. But, as the blog post points out, there is a LOT of developmental code and packages in that image that shouldn't be. It is likely just a case of not removing unnecessary packages from the base image.

Because... the entire point of a device like this is that you plug it in somewhere you aren't. MAYBE JetKVM corp can hear me muttering profanity or wondering where I left that USB c splitter when I am trying to assemble it the first time. The rest of the time? It is plugged into the back of a server that I am booting up so that I can install proxmox without having to drag a monitor over. And while you can potentially get some juicy info out of that? It is not at all worth the hassle to set up fake companies and market a fake (moderately high demand in the right circles) device.

in reply to NuXCOM_90Percent

Yeah you 100% have the right of this. Not a secret at all and very clearly documented on their github.

github.com/sipeed/NanoKVM

github.com/sipeed/sipeed_wiki/…

Questa voce è stata modificata (1 settimana fa)
in reply to MonkderVierte

Note: Out of the 256MB memory in SG2002, 158MB is currently allocated for the multimedia subsystem, which NanoKVM will use for video image acquisition and processing.
in reply to doopinglouie

To summarize: the device is riddled with security flaws, originally shipped with default passwords, communicates with servers in China, comes preinstalled with hacking tools, and even includes a built-in microphone - fully equipped for recording audio - without clear mention of it in the documentation. Could it get any worse?

I am pretty sure these issues stem from extreme negligence and rushed development rather than malicious intent. However, that doesn’t make them any less concerning.


Slop everywhere. As far as the eye can see.

Questa voce è stata modificata (1 settimana fa)
in reply to paraphrand

Nest's security system shipped with an undocumented microphone they activated later, sadly this isn't totally limited to Chinese crap.
in reply to paraphrand

Yeah the author clearly searched and replaced all the em dashes with hyphens, yet still used an ellipsis character. Certified slop.
in reply to doopinglouie

(though JavaScript JIT must be enabled)


How did they manage this? Is there a JS command to check that?

I disabled JIT/ion in my FF profiles, because js got so complex that it only speeds up the heavy webapps i avoid and has huge security concerns otherwise.

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in reply to doopinglouie

I had several IOT smart plugs that have GPS built in.

why? why would it need to know its exact geographic location?!

after that I created an entire hardware segmented network that's specifically used for IOT and cameras.

last I checked the router/firewall it's on has blocked over 11million requests a month trying to access the outside.

I will never have a "smart" device in my home that's connected to the internet. I'll live like it's the 1930s if I ever have to.

in reply to GreenKnight23

I've done the same but that request number is BS. Of course it keeps retrying cause it couldn't get an answer. It does not mean if it could connect it would connect 21 million times.
in reply to doopinglouie

FFS... I'm never going to buy anything hyped by LTT before doing more thorough research on it.
in reply to BlackEco

Yeah. Believe it or not but the sex pest who actively didn't warn his contemporaries about the impact of the honey plugin and who now advertises on kiwi farms might be kind of a piece of shit who will say anything for a buck?

And now for a word from d-brand!

in reply to NuXCOM_90Percent

Oh come on this honey thing is so over blown. Honey was known to be bad even then but I guess no one made a YouTube video about it and people can't read anymore.
in reply to BlackEco

Obviously never rely on a single source before buying something, but this isn't news. See the other dude's comment lemmy.world/comment/20879776


Yeah you 100% have the right of this. Not a secret at all and very clearly documented on their github.

github.com/sipeed/NanoKVM

github.com/sipeed/sipeed_wiki/…


in reply to doopinglouie

I was really sketched out with my BLI-KVM.
I had a server that was off, when I booted it the bios was in Chinese. Although someone did say that motherboard had a flaw that would do that, I wasn’t Sure if it was the KVM or the motherboard, but still…
in reply to Retro_unlimited

No critical thinking I guess. How the hell would a KVM flash your BIOS or more likely UEFI.
in reply to Auli

It could probably change the language selector.

If I'm an elite hacker spy who works for the hacker spy division of the Chinese army, am I going to change the system language of the thing I am hacking to Chinese and forget to change it back?